hannah's school hosted a book donation. there are 150 students at her school, and they donated b books! hannah donated 3 times a
2 answers:
Answer:
Step-by-step explanation:
Given: The total number of students donated books in Hannah's school = 150
The number of books donated by students = b
The average number of books each student donated=
Thus, The average number of books each student donated=
Since, Hannah donated 3 times as many as the average number of books each student donated.
Then , the number of books donated by Hannah=
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Answer:
- OT⊥BA;T is the midpoint of BA-------Given
- ∠BTO and ∠ATO are right angles ---Definition of perpendicular lines
- ∠BTO≅∠ATO---------------------------------All right angles are congruent
- T is the midpoint of BA------------------ Given
- TA≅TB-------------------------------------------Definition of midpoint
- TO≅TO------------------------------------------Reflexive
- ΔBOT≅ΔAOT---------------------------------SAS
Step-by-step explanation:
Given that ⊥
and
is the midpoint of
As ⊥
,
∠ and ∠
are right angles (Definition of perpendicular lines)
⇒∠≅ ∠
(All right angles are congruent)
T is the midpoint of (given)
⇒≅
(Definition of midpoint)
≅
(Reflexive)
Therefore, Δ≅Δ
(by SAS criteria ):
conditions:
- ∠
∠